Dimensions larger, but grader says evidence of trimming...

I bought a 68 Ryan that was determined by PSA to be trimmed... and sold as such...Just like the seller described, the card measures the same height and perhaps a tiny bit wider than all my other PSA graded 68 Topps. Other than the obvious suggestion to re-submit, and the possibility that this was cut from an un-cut sheet...can anyone suggest how a trimmed card would be the same or larger than the acceptable examples I have?
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Comments
This absolutely happens with 1955 Bowman baseball, for example. And T-206
Size isn't the only factor.
mosaic's Nolan Ryan Basic Topps registry set
mosaic's Big 3 Nolan Ryan Run Showcase